diff --git a/.github/workflows/mirror.yaml b/.github/workflows/mirror.yaml
index 104d3ba0..8711500c 100644
--- a/.github/workflows/mirror.yaml
+++ b/.github/workflows/mirror.yaml
@@ -12,7 +12,7 @@ concurrency:
 jobs:
   build:
     name: Mirror and Trigger EICweb
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     permissions:
       actions: write
       contents: read